While trying to solve some networking problems on my avalon I made it even worse

Connected via LAN disabled WLAN, later I set the LAN subnet to 0.0.0.0. IP address is still 192.168.0.100. Now I can't reach it anymore. Is there a way to reach it again?
you cant reach the router.
the avalon is still there, conect it to your PC with cgminer installed via USB, asap, then you think about repairing/reseting the router.